Dump-car.



A. CAMPBELL..

DUMP GAR.

APPLIOATION FILED DB0. 1e, 1910.

Patented May 23, 1911.

2 SHEETS-'SHEET 1.

UNITED sTA-Tns PATENT onirica ARGYLE CAMPBELL, OF CHICAGO, ILLINOIS, ASSIGNOR TO EN'11EIRPRISIE RAILWAY EQUIPMENT COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

DUMP-CAR.

Specification of Letters Patent.

Patented May 23, 1911.

Application filed December 16,'1910. Serial No. 597,637.

To all whom it may concern.'

hopper bottom dump carof a simple, elii- Be it known that I, ARGYLE CAisirBiiLL, a citizen of the United States, residing in Ghi- .cago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Dump-Cars, of which the following is a specification.

lMy invention relates to improvements in dump cars. I

The object of my invention is to provide a cient and durable construction, having a plurality of doors,both of which may be ,simultaneously opened and closed by a single operating shaft located ateither side of both doors 'or upon one side of the car.

Myinvention consists in connection with a hopper bottom. dump car, of two doors hinged t-o open in opposite directions, both, for example, toward the center ofthecar, anjd a single operating shaft arranged at one side of both doors, for example, at one side `of the car, and connections between said operating sha-ft .and both doors operating to simultaneously close or open the doors, one of the doors closing under a push or compression movement of its connection and the` other under a pulling or tension strain of its connection.

My invention further consists in the novel construction of parts and devices and in the novel combinations of part-s and devices herein shown and described and more particularly specified in the claims.

In the accompanying drawing forming a partof this specification, Figure 1 vis a side elevation of a dump car embodying my inx y vention. Fig. 2 is a plan view. Fig. 3 is arr enlarged detail, cross section on line 3-3 of Fig. 2. Fig. 4 is an elevation` of the operating mechanism similar to Fig. 3, showing the parts in a diii'erent position. Fig. 5 is a detail section on line of Fig. FieV ,6 is a detail sectionon `line 6 6 off-Fig. 3.L

In the drawing, 1. represents the body of a dump car' of any suitable construction, 2

the Wheels, 3 the center sills, 4 the side sills,

1.5' the upright stakes or frame-members` of the body, 6A the upright sides of the body, 7 hopper bottom members extending longi tudinally from the ends of .the car toward the dump doors and 8 hopper bottom members extending transversely of the car body fromeacli side toward the dum doors and 9 a center hopper sheet extending longituto the center sills.

dinally over the center sills, the car illus- 'trated in the drawing being designed for 12 is a single operating shaft for both doors, the same being preferably mounted under oneside of the car and journaled in a suitable bracket or frame memberl. The operating shaft 12 is furnished with a double armed operating member or lever 14, one arm 15 of which is pivotally connected by a pin 1G' with a push or compression link 17, which is pivotally connected at its other end by a pin 18 to one of the doors 10, and which operates to close by a push or compression movement oneof the oppositely swinging'doors 10. The compression link 17 is furnished with a bend 19 at its operating shaft end to adapt it to hook over or around the arm ,-15 when the door 1() is opened, thus enabling the member 14 to be turned through ya complete arc of 180 degrees, and thereby giving a fulleropening movement to the door. The arm 15 of the operating vmember 14 and the compression link 17 are provided with interengaging shoulders 20, 21, which abut diiectly. together when the door 10 is in 'its closed position, at this time the pivot pin 16 being directly in line with the operating shaft 12 and pivot pin 18 which connects the link 17 with the door 10, thus locking the door in its closed position. The other arm 22 of the operatingmember or lever 14 is connected by a pivot pin 23 with a pull or tension link 24, which is connected at its other end by a pin 25-With the other door 10a, and which operates to close and hold closed the other door 10a by a pull or tension movement or strain. -l

The pull link 24 is provided with a bend 26 at its `outer end, having ashoulder 27, adapted to engage or abut against a corresponding shoulder 2S on the operating arm l22 when the door 10a is closed, thus relieving the pivot pin Q3 `from the strain of the load. When the door a is closed, the pivot pin 23 of the pull link Q-t is directly in line with the ol'ieratingl shaft 1Q and the pivotcd connection 25 of the link Q4 with the door 10a. thus locking the door in *its closed position, as all the pivots are on a dead center or in the same straight line. The pivot pin 1S is secured to the'door 10 by a bracket 18, and the pivot pin Q5 is secured to the door 1()a by a .similar bracket Z29 and` eye bolts 37.

' The operating arms Q2 and 15 of the operating member or lever llt on the operat; ingshaft 1L are of unequal length, the arm Q2 beingr materiallylonger than the arm 15. This enables the doors 1() and 10 to have. equal o] )ening movements, notwithstanding the fact that the oppositely swinging doors are located at different distances from the operating shaft and make ditferent angles with the lin-ks 17 and Q-t when the doors are in their closed positions, and also when the doorsl are in their open positions.` and notwithstanding the fact thatithe longer.

and uppermost link 17 is'connected to the door 10 somewhatnearer its hinge than is the link 2t to the door 10. n

ln the drawing, the ear is represented as having two pairs ofV oppositely opening doors 10, 10" and 10, 10, separated from 'each other by-the transverse member or plate 30 of the car body under which the short operating shaft 12 is mounted, two doors 10, 10 on oneside, being connected together by a bridge member 31 and thus operated as one door. The. operating shaft is furnished with. a ratchet 32 and locking dogs 33, 34 are provided for locking the shaft in position when the doors are closed. The operating shaft is turned in the usual way by a' lever having the customary wrench claW to fit on the squared end of the operating shaft.

The operating lever 14 is furnished with guide flanges forming a channel between them to receive the pull link Q4 when the doors are closed and between which the compression link 17 tits when the doors are open, as will be readily understood from Figs. 3, 4 and 6.

1. In dump car, the combination with oppositely swinging doors, of an operating shaft at one side of both doors for simul-` doors, the pivots of each of said links being directly in line with the operating shaft f when the doors are closed, substantially as. specified. y

In a dump car, theJ combination with oppositely swinging doors, of an operating shaft at one side of both doors for` simultaneously operating the same, an operating member on said shaft` having arms of-unequal length, a connecting link extending from one of said arms to one of said doors, and a connecting link extending from the other of said arms tothe other of said, doors` the pivots of each of said links being directly in line with the operating shaft when the doors are closed, and said links and arms having interengaging abutment shoulders when the doors are closed,rsub stantially as specified.

4. lnA a dumprar, the combination with oppositely swinging doors, of an operating shaft at one side of both doors for simultaneously operating the same, an operatingi.

member on said shaft having arms of unequal length` a connecting link extending from one of said armste one of said doors and a connecting link extending from the other of'said arms to the other of said doors, lsaid operating member having guide flanges torcceive said links, substantiallyas specified.

5. In a dump car, t-he comblnation with oppasitely swinging doors, of'an operating shaft at oneside of both doors for simultaneously operating 'the same, an operating member on said shaft having arms of unequal length, a connecting link extending from one' of said arms to one of said doors and a connecting link extending from the other of said arms to the other of said doors, said links having bent ends, substantially as specified.

(l. In a dump car, the combination W1th a car body having transversely inclined ho per bottom sheets, of Va pair of opposite y swinging longitudinally hinged doors, a single operating shaft for both said doors mounted at one side of the car under one of said hopper sheets, an operating member on said shaft having two arms, a push link connecting one of said arms with one of said doors and a pull link connecting the other of said arms with the other of said doors, substantially as specified.

car body having transversely inclined ho per bottom sheets, of a pair of opposite y swinging longitudinally hinged doors, a 51ngle operating shaft for both said doors 125.i 7. In a. dump ear, the combination with a of said arms with the other of said doors,

said links and arms having iuterengaging abutment shoulders when the doors are closed, substantially as specified.

8. In a dump ear, the combination with a Car body having transversely inclined hopper-bottom sheets, ot' a pair ot' oppositely swinging longitudinally hinged doors, a single ope ating shaft' for both said doors mounted atI one side of the car under one of said hopper sheets, an operating member on said shaft having two arms, a push link connecting' one of said armswith one of said doors and a pull link connecting the other of said arms with 4the other ot' said doors, said links having bent ends hinged to the arms of said' operating member on said shaft, substantially as specified.

il. In a dump oar` the Combination with a ear body having transversely inclined hopper bottom sheets, ot' a pair ot oppositely'swing ing longitudiruilly hinged doors, a single operating .shattfor both said doors mounted at one side of the car under one of said hopper sheets,- an operating member on said shaft having two arms, a push link conneti ing one of said arms with one of said doors and a pull link connecting the other of said arms with the other of said doors,'said c onneeting links having bent ends hinged' to the arms of said operating member on said shaft, said operating arms and said bent' ends ot said links having interengaging shoulders, substantially as specified.

10. lu a dump oar, the combination with a ear body having transverselyinclined hopper bottom sheets, of a air of oppositely swinging longitudinally hinged doors, a single operatingshaft for both said doors mounted at one side of the oar under one of said hopper sheets, an operating memberon said shaft having t-Wo arms, a push link connecting one of said arms with oneof said doors and a pull link conneoting the other of said arms with the other of said doors, said links having pivotal connections with the arms of said' operating member,` and said doors and the pivots of'said links being directly in line with the operating shaft when the doors arelclo'sed, substantially as specilied. A ARGYLE CAMPBELL. lVit-nesses A. E. ZIMMER, F. B. ToivNsnNn. 

